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In the process of iris classification, a new classification distance with adjustable weight which takes advantage of whole phase information to encode is proposed. The method is to use feature extraction function to do the extraction toward all iris image, which could obtain real and imaginary part iris information. Then, tangent function is used to transform extracted real and imaginary part characteristics...
An iris recognition system, more secure and practical, be proposed by the combination of chaos encryption and iris recognition. In the process of iris recognition, using multi-scale 2D Gabor filter to acquire the identify code of iris texture only in single-direction. To protect the identify code be transported securely, one-way coupled map lattice (OCML) chaos system be applied to generate pseudo-random...
Kaiser function is used to establish clear edge Kaiser filter channel which has selectivity in the frequency and direction with the characteristic of high adaptability and adjustable performance to feature the iris frequency, which is to modify the filter channel edge faintness due to the spectrum leakage when Gabor filter does the data truncation. Then complete classification of the weighted phase...
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